De senectute.
D000059:Accidents; D000368:Aged; D000375:Aging; D001290:Attitude; D003643:Death; D004032:Diet; D005260:Female; D006801:Humans; D008132:Loneliness; D008297:Male; D008875:Middle Aged; D012179:Retirement; D012890:Sleep; D014937:Work